Lakeshore Learning Materials 622 User Manual
Page 62
Lake Shore Model 620/622/623/647 Magnet Power Supply User’s Manual
Error Messages & Troubleshooting
5-4
5.2
Factory Default Settings
Below is a list of factory-presets. To reinitialize the MPS to factory presets at any time, hold the Esc key for
about 15 seconds.
NOTE: If the MPS is part of a superconducting magnet system, the system supplier may change some of the
parameters below to optimize MPS operation to the superconducting magnet it works with.
Automatic Mode Screen – This screen is unavailable if PSH option is not installed
MGT START: 0.000A
– Magnet Start
MGT END: 0.000A
– Magnet End
MGT RATE: 1.000A/S
– Magnet Rate
PERS RATE: 1.000A/S
– Persistence Rate
LAST END: 0.000A
– Ending current from last magnet charge
PERSISTENCE: <ON>
– Persistence Mode Status
RUN: ¥
– Ramp Start Toggle
Automatic Mode Delays Screen
RUN UP: 60 S
– Run Up
PSH OFF: 60 S
– PSH Off
RAMP END: 60 S
– Ramp End
PSH ON: 60 S
– PSH On
Manual Mode Screen
CURRENT: +0.000A
– Current Setting
COMPLIANCE: +1.000V
– Compliance Voltage Setting (Cannot be changed in this screen)
RAMP RATE: +1.000A/S
– Ramp Rate
RAMP ENABLE: <OFF>
– Ramp Enable Off
PERSISTENCE: <ON>
– Persistence Status (Not present if PSH option not installed)
Instrument Setup Screen
FLD ENABLE: <OFF>
– Magnetic Field Enable Off
B UNITS: kG
– Magnetic B-Field Units
kG/A: ±0.100
– Field per Amperes
IMAX SET: ±50.000A (620), ±125.000A (622), ±155.000A (623), ±72.000A (647) – Maximum Current
COMPLIANCE: ±5.000V (620), ±30.000V (622/623), ±32.000V (647),
– Maximum Compliance Voltage
(Retains Last Setting On Power Down)
Step Limit/Zero Screen
CURRENT STEP LIMIT:
STATUS: <ON>
– Output Current Step Limit Status
I STEP: +10.000A
– Output Current Step Limit
ZERO:
STATUS: <OFF>
– Output Current Zero Status
I ZERO: +0.000A
– Output Current Zero Value
I MODE: INTERNAL
– Output Current Programming Mode (Display Only)
Interface Setup Screen (If Present)
IEEE ADD: 12
– IEEE 488 Address
TRMS/EOI: (CR LF) EOI – Terminators (Carriage Return & Line Feed) and EOI On
RS-232C: 1200,N,8,1
– Serial I/O Definition (9600 Baud, No Parity, 8 data bits, 1 stop bit)
CB DEF: 9600,o,7,1
– Control Bus Definition (9600 Baud, Odd Parity, 7 data bits, 1 stop bit)
CB ADD: 0
– Control Bus Address
VW ANGLE: 5
– Viewing Angle (5 = Straight On)
MF ID: 622 (1)
– Mainframe ID Number
Liquid Helium Level Screens (If Present)
READING: 00.00 <OFF>
– Level Reading and Status
UNITS: in (E)
– Level Probe Units – Inches (English)
NEXT RDG: 00:00
– Next Reading (HH:MM)
PERIOD: 01.00
– Period (HH:MM)
ALARM: +0.0<OFF>
– Level Alarm and Status
ZERO REF: +0.0<OFF>
– Level Zero Reference and Status
Field Screen (If Present)
Persistent Switch Heater (PSH) Screen (If Present)
FIELD PROBE SETTING:
HEATER: 50mA
– PSH Current
UNITS: kG
– Field Units in Kilogauss
STATUS: <OFF>
– PSH Status
CALIBRATE PROBE:
LAST END: 0.000A – Ending current from last magnet charge
mV/kG: +0.800
– Field Probe Sensitivity